This title appears in the Scientific Report :
2021
Please use the identifier:
http://hdl.handle.net/2128/29647 in citations.
Please use the identifier: http://dx.doi.org/10.1016/j.physletb.2021.136749 in citations.
QCD transition at the physical point, and its scaling window from twisted mass Wilson fermions
QCD transition at the physical point, and its scaling window from twisted mass Wilson fermions
We study the scaling properties of the finite temperature QCD phase transition, for light quark masses ranging from the heavy quark regime to their physical values. The lattice results are obtained in the fixed scale approach from simulations of Nf = 2 + 1 + 1 flavours of Wilson fermions at maximal...
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Personal Name(s): | Kotov, Andrey Yu. (Corresponding author) |
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Lombardo, Maria Paola / Trunin, Anton | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | Physics letters / B, 823 (2021) S. 136749 - |
Imprint: |
Amsterdam
North-Holland Publ.
2021
|
DOI: |
10.1016/j.physletb.2021.136749 |
Document Type: |
Journal Article |
Research Program: |
Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1016/j.physletb.2021.136749 in citations.
We study the scaling properties of the finite temperature QCD phase transition, for light quark masses ranging from the heavy quark regime to their physical values. The lattice results are obtained in the fixed scale approach from simulations of Nf = 2 + 1 + 1 flavours of Wilson fermions at maximal twist. We identify an order parameter free from the linear contributions in mass due to additive renormalization and regular terms in the Equation of State, which proves useful for the assessment of the hypothesized universal behaviour. We find compatibility with the 3D O (4) universality class for the physical pion mass and temperatures 120 MeV ≲ T ≲ 300 MeV. We discuss violation of scaling at larger masses and a possible cross-over to mean field behaviour. The chiral extrapolation T0 = 134-4+6 MeV of the pseudocritical temperature is robust against predictions of different universality classes and consistent with its estimate from the O (4) Equation of State for the physical pion mass. |